Structural features of a heteroxylan from Sophora subprostrata roots

被引：23

作者：

Dong, Q ^{[1
]}

Ding, SW ^{[1
]}

Yang, X ^{[1
]}

Fang, JN ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Mat Med, Shanghai 200032, Peoples R China

来源：

PHYTOCHEMISTRY | 1999年 / 50卷 / 01期

关键词：

Sophora subprostrata; Leguminosae; heteroxylan; polysaccharides;

D O I：

10.1016/S0031-9422(98)00487-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

An acidic heteroxylan, SSb2, was isolated from the alkaline extract of Sophora subprostrata by DEAE-Sephadex A-25 and Sephacryl S-300 chromatography, with an M-r of 4.4 x 10(5) and a specific optical rotation of -49.2 degrees (c 0.5, H2O). Its structural features were elucidated by methylation analysis, partial acid hydrolysis, periodate oxidation and C-13 NMR spectroscopy. The data obtained indicated that SSb2 has a backbone consisting of 1,4-linked xylopyranosyl residues with branches at O-2 or O-3, composed of L-Ara(f)(1 --> 5)L-Ara(f)(1 --> , 4-O-Me-D-GlcA(1 --> or D-GlcA(1 --> . SSb-2 exhibited an immunostimulating activity in vivo in pharmacological experiments. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：81 / 84

页数：4

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